Spring for upholstered cushions.



PATENTED JAN. 27, 1903.

E. B. SMITH; SPRING FOR UPHOLSTERED GUSHIONS.

APPLIOATION FILED NOV.14, 1902.

2 SHEETS-SHEET l 10 MODEL.

No. 719,155. PATENTBD JAN. 27, 1903.

E. B. SMITH. SPRING POE IIPHOLSTERED GUSHIONS.

APPLIOATION I ILBD NOV. 14, 1902.

N0 MODEL. 2 SHEETS-SHEET 2.

S'ra'rns EZRA I3. SMITII, OF CINCINNATI, OHIO.

SPRING FOR UPHOLSTERED CUSHIONS.

sPEGIFIUATIUH forming part of Letters Patent No. 719,155, dated January 27, 1903. Application filed November 14, 1902. Serial No. 181.367. (No model.)

To ctZZ whom it ill/(by concern:

Be it known that I, EZRA B. SMITH, a citizen of the United States, residing at Cincinnati, in the county of Hamilton and State of Ohio, have invented certain new and useful Improvements in Springs for Upholstered Gushions, of which the following is a full, clear, and exact description, reference being had to the accompanying drawings, forming part of this specification.

My invention relates more particularly to spring constructions for vehicle-seats, though it is of course capable of use in chair, lounge, or mattress constructions; and it has for its object the production of a simple and efficient spring construction so united to the frame that while having all the elasticity required the springs cannot get out of place or be deflected from their positions.

The novelty of my invention will be hereinafter more fully set forth, and specifically pointed out in the claims.

In the accompanying drawings, Figure 1, Sheet 1, is a bottom plan view of a seat-frame equipped with my improved construction. Fig. 2, Sheet 1, is a transverse elevation on the dotted line Q6 of Fig. 1 looking to the right and with the frame turned over to its proper position. Fig. 3, Sheet 1, is an enlarged. bottom plan view in broken detail, showing the connection of the conical spiral spring with the double-crank arms of one of the transverse Wires. Fig. 4, Sheet 1, is an upright side elevation of Fig. 3. Fig. 5, Sheet 2, is a bottom plan view of the frame in a construction employing three rows of springs. Fig. 6, Sheet 2, is an enlarged perspective showing the manner of looping and interlocking the supporting-wires. Fig. 7, Sheet 2, is an enlarged perspective view in detail, showing the manner of uniting top supporting-wires to the upper coils of the springs. Fig. 8, Sheet 2, is an enlarged perspective view showing the manner in which the lower coils of the springs are interlocked with and secured to the double-crank arms.

The same letters of reference are used to indicate identical parts in all the figures.

In Figs. 1 and 5 the frame is shown as composed of the longitudinal bars A and transverse bars 13 of the usual or any suitable construction and usually of wood, forming a rectangular frame. Extending transversely across this frame are a series of equidistant wires C, which extend across the frame at or near its bottom, as seen in Fig. 2, and have their ends bent up, as at ct, and secured to the top sides of the bars A in any suitable manner, in this instance by being bent down and driven into the bars, as at b. These transverse wires have in them looped bends in the form of double cranks, as seen at 0, Figs. 3 and 8, said looped bends being bent down slightly below the plane of the wires 0, as seen at d, Fig. 8, and they serve as supports for the lower ends of the inverted conical spiral springs D, which are secured to them in the following manner: The free end .of the lower end of the spring is bent downward, as at 6, Figs. 3, el, and 8, and the lower coil of the spring is passed under the wires 0 at the bends cl and over the crank-loops c, and the end containing the bend e is hooked over the loop a with the bend confined in the loop, thereby forming a secure lock for the springs upon the double-crank. bends of the wires 0, which look cannot be accidentally broken under the ordinary uses to which the springs are put.

As a further strengthening and staying device I employ a wire E intermediate of the I double-crank bends, which is secured in any manner to the transverse wires 0, and, as seen in Figs. 1 and 6, the method of uniting the wires 0 and E is by bending the former, as at f, Fig. 6, and looping the latter around the same, as at g.

In Fig. 5, where more than two longitudinal rows of springs are employed, there is a longitudinal wire E uniting the wires 0 between each row of double-crank supports 0, and the ends of the wires E may be secured to the frame-bars B or not, as desired.

To further support the springs D, top wires F Gr may be employed, the former extending longitudinally of the spring parallel with the bars A and united to the upper coils by a loop h, as seen in Fig. 7, and the latter extending transversely and similarly united to the upper coils, as seen in Fig. 1. In this way the springs are securely'attached at their bottoms to the transverse wires 0 and are supported at their upper ends by the longitudinal and transverse wires F G, so that there is no liability of individual springs being thrown out of shape or displaced, as Will be readily understood.

A large part of the value of my invention can be obtained without the employment of the top supporting-wires F G, and in some cases they may be dispensed with.

Having thus fully described my invention, I claim- 1. In cushion-spring construction, the combination of a frame, parallel wires secured thereto and extending transversely thereof at or near the bottom of the frame, horizontal double-crank bends in said wires, and inverted conical spiral springs engaging and resting upon the double-crank bends with interlocking connections and having bent-down ends to form a lock with the double-crank bends, substantially as described.

2. In cushion-spring, construction, the combination of a frame, parallel wires secured thereto and extending transversely thereof at or near the bottom of the frame, horizontal double-crank bends in said wires, inverted conical spiral springs engaging and resting upon the double-crank bends with interlocking connections and having bent-down ends to form a lock with the double-crank bends, and a supporting-wire for the transverse bottom wires between the double-crank bends, substantially as described.

3. In cushion-springconstruction, the combination of a frame, parallel wires secured thereto and extending transversely thereof at or near the bottom of the frame, horizontal double-crank bends in said wires, inverted conical spiral springs engaging and resting upon the double-crank bends with interlocking connections and having bent-down ends to form a lock with the double-crank bends, a supporting-wire for the transverse bottom Wires between the double-crank bends, and top supporting-wiresfor the springs, substantially as described.

EZRA B. SMITH. Witnesses: EDWARD PECK, WM. J. PEcK. 

